targetframework.props

<Project>
    <PropertyGroup Condition="! $(OS.Contains('win')) AND '$(TargetFramework)'== 'net461'">
        <FrameworkPathOverride>$(NuGetPackageRoot)microsoft.targetingpack.netframework.v4.6.1/1.0.1/lib/net461/</FrameworkPathOverride>
        <RestoreAdditionalProjectSources>https://dotnet.myget.org/F/dotnet-core/api/v3/index.json</RestoreAdditionalProjectSources>
      <SourceLinkGitHubVersion>1.0.0-beta2-18618-05</SourceLinkGitHubVersion>
  </PropertyGroup>
    <ItemGroup Condition="! $(OS.Contains('win')) AND '$(TargetFramework)'== 'net461'">
        <PackageReference Include="Microsoft.TargetingPack.NETFramework.v4.6.1"  Version="1.0.1" ExcludeAssets="All" PrivateAssets="All" />
    </ItemGroup>
</Project>